It's been a while since I've made these changes but ill try to list them
-SS-L1-1 V2: Added a hole to run the bilge pump outlet up through the smoke stack.
-SS-L2-1 V2: Same as above ^^^
-SS-L2-2 V2: Integrated a recovery float system hidden in the other smoke stack. I used a thread bobbin with a metal rod through the small holes. A thin fishing bobber will fit with some trimming.
There are some other smaller changes but i don't remember what they were exactly....